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A092386 Let p(n) = n-th prime; a(n) = largest prime factor of (p(n+1)^2 - p(n)*p(n+2)). 1
1, 2, 3, 5, 3, 7, 5, 11, 2, 7, 7, 5, 13, 7, 3, 31, 29, 79, 5, 7, 13, 71, 13, 7, 7, 11, 37, 7, 179, 17, 17, 7, 13, 101, 37, 3, 7, 31, 3, 13, 17, 43, 7, 67, 983, 3, 229, 11, 5, 17, 11, 53, 19, 3, 3, 17, 67, 17, 19, 17, 43, 521, 7, 103, 173, 683, 23, 233, 23, 31, 67, 23, 3, 23, 53, 73, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 0..9999

FORMULA

a(n) = A006530(A056221(n)).

MATHEMATICA

Table[ FactorInteger[Prime[n + 1]^2 - Prime[n]Prime[n + 2]][[ -1, 1]], {n, 80}] (* Robert G. Wilson v, Mar 24 2004 *)

CROSSREFS

Cf. A006530, A056221.

Sequence in context: A117367 A080184 A052248 * A117369 A117366 A073482

Adjacent sequences:  A092383 A092384 A092385 * A092387 A092388 A092389

KEYWORD

easy,nonn

AUTHOR

Frank Schwellinger (nummer_eins(AT)web.de), Mar 20 2004

EXTENSIONS

More terms from Robert G. Wilson v, Mar 24 2004

STATUS

approved

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Last modified October 23 21:57 EDT 2019. Contains 328373 sequences. (Running on oeis4.)